1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2016
4 * Xilinx, Inc.
5 *
6 * (C) Copyright 2016
7 * Toradex AG
8 *
9 * Michal Simek <michal.simek@xilinx.com>
10 * Stefan Agner <stefan.agner@toradex.com>
11 */
12 #include <common.h>
13 #include <binman_sym.h>
14 #include <image.h>
15 #include <log.h>
16 #include <mapmem.h>
17 #include <spl.h>
18 #include <linux/libfdt.h>
19
20 #ifndef CONFIG_SPL_LOAD_FIT_ADDRESS
21 # define CONFIG_SPL_LOAD_FIT_ADDRESS 0
22 #endif
23
spl_ram_load_read(struct spl_load_info * load,ulong sector,ulong count,void * buf)24 static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
25 ulong count, void *buf)
26 {
27 debug("%s: sector %lx, count %lx, buf %lx\n",
28 __func__, sector, count, (ulong)buf);
29 memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count);
30 return count;
31 }
32
spl_ram_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)33 static int spl_ram_load_image(struct spl_image_info *spl_image,
34 struct spl_boot_device *bootdev)
35 {
36 struct image_header *header;
37
38 header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS;
39
40 #if CONFIG_IS_ENABLED(DFU)
41 if (bootdev->boot_device == BOOT_DEVICE_DFU)
42 spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
43 #endif
44
45 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
46 image_get_magic(header) == FDT_MAGIC) {
47 struct spl_load_info load;
48
49 debug("Found FIT\n");
50 load.bl_len = 1;
51 load.read = spl_ram_load_read;
52 spl_load_simple_fit(spl_image, &load, 0, header);
53 } else {
54 ulong u_boot_pos = binman_sym(ulong, u_boot_any, image_pos);
55
56 debug("Legacy image\n");
57 /*
58 * Get the header. It will point to an address defined by
59 * handoff which will tell where the image located inside
60 * the flash.
61 */
62 debug("u_boot_pos = %lx\n", u_boot_pos);
63 if (u_boot_pos == BINMAN_SYM_MISSING) {
64 /*
65 * No binman support or no information. For now, fix it
66 * to the address pointed to by U-Boot.
67 */
68 u_boot_pos = (ulong)spl_get_load_buffer(-sizeof(*header),
69 sizeof(*header));
70 }
71 header = (struct image_header *)map_sysmem(u_boot_pos, 0);
72
73 spl_parse_image_header(spl_image, header);
74 }
75
76 return 0;
77 }
78 #if CONFIG_IS_ENABLED(RAM_DEVICE)
79 SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image);
80 #endif
81 #if CONFIG_IS_ENABLED(DFU)
82 SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image);
83 #endif
84